Retrieves a handle for each module in the specified process that meets the specified filter criteria.
BOOL WINAPI EnumProcessModulesEx( _In_ HANDLE hProcess, _Out_ HMODULE *lphModule, _In_ DWORD cb, _Out_ LPDWORD lpcbNeeded, _In_ DWORD dwFilterFlag );
- hProcess [in]
A handle to the process.
- lphModule [out]
An array that receives the list of module handles.
- cb [in]
The size of the lphModule array, in bytes.
- lpcbNeeded [out]
The number of bytes required to store all module handles in the lphModule array.
- dwFilterFlag [in]
The filter criteria. This parameter can be one of the following values.
List the 32-bit modules.
List the 64-bit modules.
List all modules.
Use the default behavior.
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
The EnumProcessModulesEx function is primarily designed for use by debuggers and similar applications that must extract module information from another process. If the module list in the target process is corrupted or not yet initialized, or if the module list changes during the function call as a result of DLLs being loaded or unloaded, EnumProcessModulesEx may fail or return incorrect information.
This function is intended primarily for 64-bit applications. If the function is called by a 32-bit application running under WOW64, the dwFilterFlag option is ignored and the function provides the same results as the EnumProcessModules function.
It is a good idea to specify a large array of HMODULE values, because it is hard to predict how many modules there will be in the process at the time you call EnumProcessModulesEx. To determine if the lphModule array is too small to hold all module handles for the process, compare the value returned in lpcbNeeded with the value specified in cb. If lpcbNeeded is greater than cb, increase the size of the array and call EnumProcessModulesEx again.
To determine how many modules were enumerated by the call to
EnumProcessModulesEx, divide the resulting value in the lpcbNeeded parameter by
The EnumProcessModulesEx function does not retrieve handles for modules that were loaded with the LOAD_LIBRARY_AS_DATAFILE flag. For more information, see LoadLibraryEx.
Do not call CloseHandle on any of the handles returned by this function. The information comes from a snapshot, so there are no resources to be freed.
To take a snapshot of specified processes and the heaps, modules, and threads used by these processes, use the CreateToolhelp32Snapshot function.
Starting with Windows 7 and Windows Server 2008 R2, Psapi.h establishes version numbers for the PSAPI functions. The PSAPI version number affects the name used to call the function and the library that a program must load.
If PSAPI_VERSION is 2 or greater, this function is defined as K32EnumProcessModulesEx in Psapi.h and exported in Kernel32.lib and Kernel32.dll. If PSAPI_VERSION is 1, this function is defined as EnumProcessModulesEx in Psapi.h and exported in Psapi.lib and Psapi.dll as a wrapper that calls K32EnumProcessModulesEx.
Programs that must run on earlier versions of Windows as well as Windows 7 and later versions should always call this function as EnumProcessModulesEx. To ensure correct resolution of symbols, add Psapi.lib to the TARGETLIBS macro and compile the program with –DPSAPI_VERSION=1. To use run-time dynamic linking, load Psapi.dll.
Minimum supported client
|Windows Vista [desktop apps only]|
Minimum supported server
|Windows Server 2008 [desktop apps only]|
Build date: 10/26/2012